Appearently it's a Time/Date problem with the Zune 30 gig
[ad#tim-right-free-cell-1]Possible Fix:
Reset the Zune (hard Reset)
Hack the Zune (Zune MP3 Player Hack)
Change the TIME AND DATE ON THE ZUNE FOR LAST YEAR
This is my thoughts on fixing the problem temporarily. This shouldn't be done unless you know what your doing. I have no zune but this is a technical issue and I know how people would like to get there Zune to working. If this solutions works let me know. These should fix the problem if someone can get it to think the zune is next year. The other way you could Possible fix this is to reset your computer to next year and then sync with the Zune after you've hard reset as long as you disconnect from the internet you should be able to fool the Zune to think it's that date. Just another good idea to get the zune to work. Just remember if it does work let me know.
*Update*
[Update - 2:20pm PST]
Hi guys,
I just got an update from the team that I want to share with you. Great news! It looks like this issue will resolve itself over the next 24 hours. Please read the response below. Thank you all for your extreme patience with this!
-Matt
Via Zune Forums